Ventilating-fan



No. 610,85I. Patented Sept. I3, I898.

M. ROLLE.

, VENTILATING FAN. 7

(Application filed June 27, 1896.)

(No Model.) 2 Sheets-Sheet l.

WITNESSES No. 610,85l.

' Patented Sept. l3, I898.

M. ROLLE.

VENTILATING FAN.

(Application filed June 27, 1896.)

(No Model.)

2 Sheets-Sheet 2.

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INVENTOR 4f NliTlED Starts Parent trier.

MAX ROLLE, OF PHILADELPHIA, PENNSYLVANIA.

VENTILATING FAN.

SPECIFICATION forming part of Letters Patent No. 610,851,- datedSeptember 13, 1898. Application filed June 27,1896. sensing. 597,140.(No model.)

To aZZ whom it may concern:

Be it known that I,MAXROLLE, a citizen of the United States, residing atPhiladelphia, in the county of Philadelphia and State of Pennsylvania,have invented certain new anduseful Improvements in Ventilating -Fans;and I do hereby declare the following to bea sufficiently full, clear,and exact description thereof to enable others skilled in the art tomake and use the said invention.

This invention relates to fans forventilating and agitating the air ofapartments, and has for its object the automatic changing of thedirection of, the current of air propelled by the fan; and to this endit consists of the hereinafter described mechanism deriving motion fromthe rotating fan-arbor, producing a slow oscillating or reciprocatingmotion of the fan upon a vertical pivot, so as to change and vary thedirection of the fan-axis and aircurrent.

The construction and operation of this invention are hereinafter fullydescribed, and shown in the accompanying drawings, in which- Figure 1 isa plan View of a fan with the invention applied thereto. A part of theframe is shown'as broken away, so as to expose the means for impartingthe reciprocating motion. Fig. 2 is an elevation thereof with the lowerportion in section. Fig. 3 is an end elevation. Fig. 4 is an enlargedsection in the plane indicated by the dotted line 3 3 in Fig. 1. Fig. 5is an enlarged section in the plane indicated by the dotted lines was onFig. 1. Figs. 6 and 6" are enlarged detached details of thereciprocating mechanism, and Fig. 7 is a modification of parts foradjusting and adj ustably varying the extent of oscillation.

Referring to Figs. 1, 2, 3, and 4. of the drawings, 1 represents therevolving arbor of the fan; 2, the vanes of the van; 3, the framesupporting the arbor-bearings 4 and the fieldmagnets 3 of the motor.

5 is a pivot upon which the. frame 3 oscil-' lates and by which it isattached to the base 6.

7 are rollers or balls interposed between the frame 3 and the base 6 toavoid friction between these parts.

0n the arbor 1 is placed an endless screw 8, turning with it andengaging in a worm- -the base 6.

wheel 9, supported by an arbor 10, having a bearing 11 attached totheframe 3. A beveltoothed. wheel 12 is attached to and turns with theworm-wheel 9 and engages the teeth of a corresponding bevelwheel 13,secured on and turning avertical arbor 14. Near the lower end of thearbor 14 is secured a pinion 16, turning with it and fitted to engagethe teeth or pins of a curved racksegment 17, formed like a mangle -rackand fastened to Aroller 18 is fitted to turn on the lower end of thearbor 14: and bears against the inner surface of the guiding-rim 19,also secured to the base 6, and holds the pinion 16 in engagement withthe teeth of the segment 17. A box or bearing-sleeve 15, supported by anarm 21 from the frame 3, is fitted on the arbor let above the pinion 16.Said arm depends from a bearing-sleeve 21, carried by the frame 3, andthe arbor turns freely in the sleeve 15, and said sleeve slides in aslot 22 in the frame 3, permitting the pinion 16 and arbor 14 to swingon the arbor 10 as the pinion passes from one side to the other of therack-segment 17 to reverse the motion of the frame 3 and connectedparts.

In the modification shown in Fig. 7 two curved racks 27 and 28 are used,into which the pinion 16 engages alternately and is; held in engagementbya spring 29, bearing against a double inclined surface 21" on theblock 21'. Inclined tripping-blocks 30 and 31, attached adjustably tothe base 6, serve to move the block 21 sidewise and cause the pinion toengage the opposite rack, and by adjusting the blocks in position on thebase 6 the length of the arcs through which the frame 3 and the fanvibrate can be varied and controlled. The electric current is conveyedfrom binding-posts 32 and 33,.through conducting-wires 34 and 35 andsprings 36 and 37, to a commutator 38, and thence to the armature 39 andto the helices of the field-magnets 3.

The operation of the machine is as follows: The arbor 1 is revolved androtates the end less screw 8, which operates the gear-wheels and pinion16 in mesh with one side of the "rack-segment 17 and revolves the frame3 upon the pivot 5 until the pinion 16 reaches the end of therack-segment. The movement of the frame 3 is then reversed by the springcontrolled block 21' engaging one of the trip-- ping-blocks, which movesthe said pinion to the other side of the rack-segment. This operation isrepeated as long as the arbor 1 is rotated.

Having thus described my invention, what I claim is- 1. The combination,With the frame, the revoluble fan-arbor journaled in the frame, meansfor revolving the arbor, an endless screw on the arbor, a worm-wheelcarried by the frame and meshing with said screw, and a beveled gear onsaid wheel, of a base pivotally supporting said frame, a vertical arbor,a pinion on each end of the vertical arbor, and a rack on said baseengaged by one of said pinions, the other of saidpinions meshing withthe said beveled gear, to impart piv- MAX ROLLE.

WVitnesses:

H. DE HAVEN, S. LLOYD WIEGAND.

